JP4402913B2 - Waterproof cap for endoscope - Google Patents

Description

  The present invention relates to an endoscope waterproof cap to be attached to a connector portion of an endoscope.

  Endoscopes (including electronic endoscopes) are regularly sterilized and cleaned because the tip is introduced into the body cavity of the patient. At that time, the connector part provided to connect the endoscope to the light source device, the external processor device, or the external camera must protect the members such as the contact part arranged inside from the chemical solution and the washing water. I must.

  For this reason, a waterproof cap is attached to the opening of the connector for connecting the electronic endoscope to the external processor device. The connector portion is provided with locking recesses on the left and right sides, and on the waterproof cap side, a link member for hooking on the locking recesses is provided. In addition, the waterproof cap is provided with a cap body with rubber formed to be approximately the same size as the front end surface of the connector section, and this cap body is moved to the opening of the connector section by rotating the rotary knob. It is assembled so that it can move back and forth in the mounting direction.

  When disinfecting and cleaning an endoscope, the cap body with rubber is pressed against the outer periphery of the connector opening by hooking the two link members into the locking recess and rotating the rotary knob. Can do. In this way, chemicals and the like are prevented from entering the connector portion where the terminals are arranged.

  However, the urging force applied to the cap body of the waterproof cap to be mounted by rotating the rotary knob is not constant depending on the person tightening the rotary knob. For this reason, if the tightening is weak, watertightness cannot be taken in the waterproof cap to be attached, and if the tightening is too strong, there is a possibility that the connector part is deformed or damaged, and the airtightness cannot be maintained. In addition, since the link member is hooked on the locking recess and the rotary knob is rotated and attached to the connector portion, it is troublesome to attach and detach the waterproof cap to the connector portion.

  For this reason, in order to maintain the airtightness when worn, a stopper with a check valve and a cup-shaped air pump are integrally formed on a waterproof cap made of silicon rubber, etc. It is disclosed that the fitting is attached, the air pump is crushed and the internal air is discharged to set the inside to a negative pressure, thereby fixing the waterproof cap to the connector portion in an airtight state (for example, Patent Document 1).

  In order to facilitate mounting, a pair of link members extend through the cap body, and the end portions are connected to the mounting holes of the lever so as to be relatively rotatable. Has disclosed a waterproof cap that includes an operating surface that holds the link member in a state of being locked in the locking recess, and an open surface that can be detached from the locking recess (see, for example, Patent Document 2). According to this waterproof cap, in order to fix the cap body to the connector portion, the link member is engaged with the locking recess provided in the connector portion by rotating the lever, and the waterproof cap attaching / detaching mechanism is installed. The structure is simplified, and the operation of fixing and releasing the fixing is easy. In the fixed state, the opening of the connector portion can be reliably sealed.

Japanese Patent Laid-Open No. 08-024209 Japanese Patent Laid-Open No. 10-11820

  However, although the waterproof cap described in Patent Document 1 can maintain its airtightness, in order to maintain the airtightness, the air pump is pressed several times to make the inside of the waterproof cap have a negative pressure. It was necessary and time-consuming. Moreover, although the waterproof cap described in Patent Document 2 can be easily attached and detached, there is a possibility that the waterproof cap may come off even with a small impact during mounting on the connector portion.

  The present invention has been made in view of the above-described problems of conventional waterproof caps for endoscopes, and an object of the present invention is to be easy to attach and detach, and to maintain airtightness without being easily removed during installation. It is an object of the present invention to provide a new and improved endoscope waterproof cap that can be used.

In order to solve the above-described problems, according to one aspect of the present invention, there is provided a waterproof cap for an endoscope that is attached to an opening portion of a connector portion provided at an end portion of a connection cord of an endoscope. A cap body that is attached to the opening of the connector , an urging means that elastically urges the cap body in a direction to attach the cap body to the opening of the connector, and a cap body that is opposed to the cap body via the urging means. A movable top plate portion, and a locking means provided on the movable top plate portion, for detachably locking the cap body to the connector portion against the direction of mounting to the opening of the connector portion of the biasing means, A waterproof cap for an endoscope is provided.

  At this time, the connector portion is provided with a locking recess for locking the locking means, and the locking means is a link member pivotally supported by an attachment hole provided on the side surface of the movable top plate portion. The link member may include a hooking portion that is locked to the locking recess.

  By adopting such a configuration, it is easy to attach and detach, and the urging force to the cap body by the urging means such as a spring becomes constant, so that the waterproof cap to be installed can be more securely sealed, In addition, it is possible to prevent the connector portion from being deformed or damaged.

  At this time, a protrusion may be provided on the side surface of the cap body, and the protrusion may be in contact with the link member when the cap body is attached to the connector portion.

  With this configuration, when the movable top plate is pushed when the waterproof cap is removed from the connector, the mounting hole provided on the side surface of the movable top plate is used as a fulcrum and comes into contact with the link member. Since the protrusion provided on the side surface of the movable top plate part acts as a force point to open the link member to the outside, the hooking part provided on the distal end side of the link member is removed from the locking recess of the connector part. Becomes easier.

  At this time, the movable top plate portion may be provided with a locking means for locking the movable top plate portion with respect to the cap body.

  With such a configuration, it is possible to prevent the waterproof cap from being unexpectedly detached due to an external impact or the like when the waterproof cap is attached to the connector portion.

  Further, at this time, the locking means includes a pair of link members provided on the movable top plate portion, and the pair of link members are detachably locked to a locking recess provided at an extension destination of the link member. It is also good to do.

  By adopting such a configuration, the hooking portion of the link member can be easily removed from the locking recess even if the moving amount when pushing the movable top plate portion is small. It is possible to increase the force, and it is possible to obtain stronger water tightness when attaching the waterproof cap to the connector part.

  At this time, an attachment / detachment assisting means may be provided on the hooking portion of the link member.

  With this configuration, the waterproof cap can be easily attached to and detached from the connector portion, and the elastic force of the urging means can be increased. Therefore, when attaching the waterproof cap to the connector portion, It becomes possible to take stronger water tightness.

  Further, at this time, the connector portion is provided with a light emitting circuit having a light source, and the light emission of the light source is turned on or off at a portion facing the connection point with the light emitting circuit on the contact surface with the connector portion of the cap body. A plurality of electrical contacts may be provided separately from each other.

  With this configuration, when the waterproof cap is attached to the connector, the crimping between the waterproof cap and the connector is sensed, and the light source provided in the light emitting circuit is turned on, so that the waterproof cap and the connector are not connected. It is possible to easily check whether watertightness is obtained.

  As described above, according to the present invention, it is possible to more easily and surely attach the waterproof cap to the connector portion, and it is possible to maintain airtightness without being easily removed at the time of attachment. Can do. In addition, it is possible to easily confirm whether watertightness is secured when the connector part and the waterproof cap are attached.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  An example of the body cavity inspection device is an electronic endoscope device. The electronic endoscope apparatus converts information related to an image in a body cavity into an electrical signal, extracts the electrical signal, performs predetermined signal processing, and displays the electrical signal on a monitor screen.

  First, the configuration of the electronic endoscope apparatus will be described with reference to the drawings. FIG. 1 is a diagram showing an outline of the entire configuration of the electronic endoscope apparatus.

  As shown in FIG. 1, an endoscope 100 provided in an electronic endoscope apparatus includes a universal operation unit 102 that is connected to an insertion unit 104 to be inserted into a body cavity and the like, and serves as a connection cord to a power source or the like. One end of the cord 106 is connected. The universal cord 106 is branched in the middle, and one of the cords 106a is detachably connected to the light source device, and the other cord 106b is detachably connected to the processor. The electronic endoscope apparatus shown in FIG. 1 is configured as a single apparatus, that is, a light source / processor unit 108, that is, a light source apparatus and a processor. The light source device and the processor may be configured as separate devices.

  In the universal cord 106, a light source connector 110 is provided at the tip of one cord 106a, and an electrical connector 112 is provided at the tip of the other cord 106b. The light source / processor unit 108 is provided with socket portions 114a and 114b to which the light source connector 110 and the electrical connector 112 are detachably connected.

  By the way, since the endoscope 100 is inserted into a body cavity of a patient, it must be cleaned and disinfected every time it is used. The insertion portion 104 that is actually inserted into the body cavity is most required for cleaning, but in order to simplify and completely clean the operation of cleaning and disinfection, the entire endoscope 100 is cleaned with a cleaning solution. Or soaked in disinfectant. For this reason, the endoscope 100 has a completely airtight structure as a whole.

  However, the electrical connector 112 (hereinafter referred to as the connector portion 112) in the universal cord 106 is provided with a large number of electrical contacts. When these contact points are put together in a cleaning / disinfecting solution, it is difficult to completely remove moisture from the contact points, which may cause corrosion or short-circuiting. A waterproof cap is attached to at least a portion where the contact portion provided in the opening of the connector portion 112 is provided for protection.

(First embodiment)
Next, the configuration and operation of the endoscope waterproof cap 116 according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a partial cross-sectional view showing a state where the endoscope waterproof cap 116 according to the present embodiment is attached to the connector portion 112, and FIG. 2A is attached to the connector portion 112 of the waterproof cap 116. It is a fragmentary sectional view at the time, (b) is a partial sectional view showing a state when the waterproof cap 116 is removed from the connector portion 112. FIG. 3A is a plan view of the opening of the endoscope waterproof cap 116 of the present embodiment, and FIG. 3B shows the endoscope waterproof cap 116 of the present embodiment. It is a top view of the opening part of the connector part 112 with which it mounts | wears. Further, FIG. 4 is a diagram for simplifying and explaining the principle of operation when the waterproof cap 116 for endoscope according to the present embodiment is removed from the connector portion 112.

  As shown in FIG. 3B, the opening portion 118 of the connector portion 112 to which the cord 106b is connected is provided with a contact portion 120 serving as an electrical contact group. The waterproof cap 116 is detachably attached to the opening 118 of the connector portion 112 in order to seal the opening 118 including the contact portion 120 at the time of cleaning or the like. The waterproof cap 116 includes a cap body 122. The cap body 122 includes a base plate 124 made of a hard member such as metal or plastic, and an elastic seal member made of rubber or the like that is fixed to the surface of the base plate 124. 126. The elastic seal member 126 includes a fitting portion 126a that covers the opening portion 118 of the connector portion 112 and a convex portion 126b that fits the contact portion 120. When the elastic sealing member 126 is brought into contact with the opening portion 118 side of the connector portion 112, The convex portion 126b enters the opening portion 118 of the connector portion 112 to a position where it does not come into contact with the contact portion 120, and the fitting portion 126a contacts the end surface of the opening portion 118 of the connector portion 112, and The inside can be sealed.

  A pair of guide rods 128 are provided vertically with respect to the longitudinal direction of the base plate 124 of the cap body 122, and a movable top plate portion 130 that can be displaced in a direction approaching or separating from the base plate 124 is inserted into the guide rod 128. As described above, the cap body 122 is provided so as to face the base plate 124. Further, as an urging means for urging the cap body 122 in the direction in which the cap body 122 is attached to the opening 118 of the connector portion 112, for example, a spring 132 is wound around the guide rod 128 between the base plate 124 and the movable top plate portion 130. It is provided as you do.

  For this reason, when the movable top plate 130 is slid in the direction of the base plate 124 with respect to the guide rod 128 when the waterproof cap 116 is attached to the opening 118 of the connector portion 112, the movable top plate 130 and the base The spring 132 provided between the plates 124 contracts, and the cap body 122 is biased in the direction in which the cap body 122 is attached to the opening 118 of the connector 112 by the force acting in the direction in which the contracted spring 132 is expanded. By using the spring 132 as an urging means when the cap body 122 is attached to the connector portion 112, the urging force to the cap body 122 becomes constant, so that the waterproof cap 116 to be attached can be more securely sealed. In addition, it is possible to prevent the connector portion 112 from being deformed or damaged.

  Further, in order to fix the cap body 122 of the waterproof cap 116 in a state where it is attached to the connector portion 112, the waterproof cap 116 has a detachable engagement with the locking recesses 134 formed on both shoulder portions of the connector portion 112. As a stopping means, a pair of link members 136 are pivotally supported on the movable top plate 130. The link member 136 is formed, for example, by bending a metal rod into a substantially U shape, and both ends of the link member 136 are bent so that the link member 136 is rotatably connected to a mounting hole 138 provided in the movable top plate 130. By doing so, a substantially loop shape is obtained, and the link member 136 can be rotated so as to straddle the cap body 122. The bent portion on the distal end side of the link member 136 becomes a hooking portion 137 that is locked to the locking recess 134.

  By configuring the waterproof cap 116 of the present embodiment as described above, when the waterproof cap 116 is attached to the connector portion 112, the movable top plate portion 130 is pushed in the direction of the base plate 124 with fingers or the like, and the link member When the hooking portion 137 provided on the distal end side of 136 is hooked on the locking concave portion 134 provided on both shoulder portions of the connector portion 112 and then the finger is removed from the movable top plate portion 130, the pushing is stopped. When the link member 136 is pulled back in a direction against the direction in which the waterproof cap 116 is attached to the connector part 112 due to the extension force of the spring 132, the hooking part 137 provided on the distal end side of the link member 136 becomes the connector part 112. Are locked to locking recesses 134 formed on both shoulders.

  Furthermore, on the side surface in the longitudinal direction of the movable top plate portion 130 of the waterproof cap 116 of the present embodiment, the position abutting the link member 136, in other words, outside the mounting hole 138 provided in the movable top plate portion 130. The protrusion 140 is provided at the position. For this reason, as shown in FIG. 2B, when the movable top plate 130 is moved in the direction of the base plate 124, the hooking portions 137 of the link member 136 are placed on both shoulders of the connector portion 112 by the projection 140. The link member 136 opens in the direction away from the formed locking recess 134, in other words, outside the connector portion 112, and is released from the locked state. The principle of the operation in which the hooking portion 137 of the link member 136 is disengaged from the locking recess 134 by the protrusion 140 will be described in detail later.

  In the present embodiment, a roller 142 is pivotally attached as a mounting assisting means to a hooking part 137 that is a part that is locked to the locking recess 134 of the link member 136 that is a locking means. By providing the roller 142, when the waterproof cap 116 is attached to the connector portion 112, the hook portion 137 of the link member 136 is locked by rotating the roller 142 on both shoulder portions of the connector portion 112. It becomes easy to lock to the recess 134. Further, when the waterproof cap 116 is removed from the connector portion 112, the roller 142 is rotated when the link member 136 is opened outward, so that the hooking portion 137 of the link member 136 is easily detached from the locking recess 134. It becomes like this.

  Next, the principle of operation when the hooking portion 137 of the link member 136 is disengaged from the locking recess 134 will be described with reference to the drawings. FIG. 4 is a diagram for simplifying and explaining the principle of operation when the waterproof cap 116 for endoscope according to the present embodiment is removed from the connector portion 112.

  FIG. 4 shows the protrusion 140 provided on the side surface of the base plate 124 of the cap body 122 in FIGS. 2A and 2B, the mounting hole 138 of the link member 136, and the center of the link member 136 in the axial direction. The above operation will be described with a triangle formed by connecting the line 136 and the intersection 136a of the longitudinal center line of the base plate 124 passing through the protrusion 140.

  As shown in FIG. 4, when the waterproof cap 116 is attached to the connector portion 112, if the movable top plate portion 130 is pushed to remove the waterproof cap 116 from the connector portion 112, the link member 136, the link member, The angle of an acute angle portion formed by a perpendicular line 141 extending from the mounting hole 138 of 136 to the base plate 124 increases from θ1 to η1. As shown in FIG. 2B, when the movable top plate portion 130 is pushed, the spring 132 provided between the movable top plate portion 130 and the base plate 124 is expanded from the contracted state to the original expanded state. Counteracts to be restored. For this reason, the acute angle portion increased to the angle η1 tends to act in a direction to return to the original angle θ1, but passes through the protrusion 140 and the axial center line of the link member 136 and the protrusion 140. Since the distance α1 to the intersection 136a with the center line in the longitudinal direction of the base plate 124 remains constant, the projection 140 acts as a force point and acts in a direction to open the link member 136 outward. .

  In other words, when the movable top plate portion 130 is pushed when the waterproof cap 116 is removed from the connector portion 112, the mounting hole 138 provided on the side surface of the movable top plate portion 130 is used as a fulcrum and comes into contact with the link member 136. The protrusion 140 provided on the side surface of the movable top plate 130 serves as a power point and acts to open the link member 136 outward. For this reason, it becomes easy to remove the hooking portion 137 provided on the distal end side of the link member 136 from the locking concave portion 134 of the connector portion 112.

  Further, the waterproof cap 116 of the present embodiment is movable with respect to the cap body 122 in order to prevent the waterproof cap 116 from being unexpectedly detached due to an external impact or the like when the waterproof cap 116 is attached to the connector portion 112. An L-shaped spring 144 is provided on the movable top plate portion 130 at a position shifted from the guide rod 128 as a locking means for locking the top plate portion 130 without bringing them close to each other. The L-shaped spring 144 is a wire-like spring that bends at a substantially right angle at the corner portion 144a. The L-shaped spring 144 is unexpectedly detached due to an external impact or the like while the waterproof cap 116 is attached to the connector portion 112. In order to prevent this, by sliding the slide portion 146 provided at the base end portion of the L-shaped spring 144 toward the center of the movable top plate portion 130, the corner portion 144a of the L-shaped spring 144 is refracted. , The distal end portion 144b of the L-shaped spring 144 stands upright substantially perpendicularly to the base plate 124 of the cap body 122 and is interposed between the movable top plate portion 130 and the base plate 124. For this reason, the movable top plate part 130 can be fixed to the cap body 122.

  As a modification of the present embodiment, as shown in FIG. 5, the locking means for locking the movable top plate portion 130 without bringing it close to the cap body 122 is hard on the movable top plate portion 130. A rod-shaped member 148 is inserted substantially vertically, and a restraining member 150 that serves to restrain the proximal end portion 148a of the rod-shaped member 148 is provided slidably with respect to the movable top plate portion 130 on the proximal end side of the rod-shaped member 148. It may be a thing.

  In this modification of the present embodiment, the distance between the movable top plate portion 130 and the base plate 124 of the cap body 122 is substantially the same in order to prevent the waterproof cap 116 from being detached while being attached to the connector portion 112. The rod-shaped member 148 having a length is inserted into the movable top plate portion 130 substantially perpendicularly, and the proximal end portion 148a of the rod-shaped member 148 is held by the restraining member 150, whereby the distal end portion 148b and the proximal end portion 148a of the rod-shaped member 148 are restrained. Is interposed between the movable top plate 130 and the base plate 124. For this reason, as shown in FIG. 5A, the movable top plate 130 can be fixed to the cap body 122. When removing the waterproof cap 116 from the connector portion 112, the base end portion 148a of the rod-shaped member 148 is restrained by sliding the restraining member 150 with respect to the movable top plate portion 130 as shown in FIG. After releasing from the state, the movable top plate 130 is pushed to open the link member 136 and remove it from the locking recess 134.

(Second Embodiment)
Next, the configuration and operation of the endoscope waterproof cap 216 according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a diagram showing a state when the endoscope waterproof cap 216 of the present embodiment is attached to the connector portion 212, and FIG. 6A is a view when the waterproof cap 216 is attached to the connector portion 212. It is a figure which shows a state, (b) is a figure which shows a state when removing the waterproof cap 216 from the connector part 212. FIG. FIG. 7 is a diagram for simplifying and explaining the principle of operation when the waterproof cap 216 for endoscope according to the present embodiment is removed from the connector portion 212.

  Similar to the waterproof cap 116 of the first embodiment, the waterproof cap 216 of the present embodiment includes a cap body 222. The cap body 222 includes a base plate 224 made of a hard member such as metal or plastic, And an elastic seal member 226 made of rubber or the like fixed to the surface of the base plate 224. In addition, a pair of guide rods 228 are provided vertically with respect to the longitudinal direction of the base plate 224 of the cap body 222, and a movable top plate portion 230 that can be displaced in a direction approaching or separating from the base plate 224 is provided on the guide rod 228. The cap body 222 is provided to face the base plate 224 so as to be inserted. Further, as an urging means for urging the cap body 222 in the mounting direction to the connector portion 212, for example, a spring 232 is wound around the guide rod 228 between the base plate 224 and the movable top plate portion 230. Is provided.

  The waterproof cap 216 of the present embodiment is different from the waterproof cap 116 of the first embodiment in the configuration of the locking means for maintaining the state of being attached to the connector portion 212. That is, the waterproof cap 216 of the present embodiment has a pair of link members 236 that are pivotally supported by the movable top plate portion 230 in order to hold the cap body 222 in a state of being attached to the connector portion 212, as shown in FIG. As shown in FIG. 6, the two crossing portions are detachably locked to locking recesses 234 formed on both shoulder portions of the connector portion 212 provided at the extension destination of the link member 236. These link members 236 are formed by bending, for example, a metal rod into a substantially U shape, as in the first embodiment. By being pivotally supported in the provided mounting hole 238, a substantially loop shape is formed, and the link member 236 can be rotated so as to straddle the cap body 222. The bent portion on the distal end side of the link member 236 becomes the hooking portion 237 that is locked to the locking recess 234.

  By configuring the waterproof cap 216 of the present embodiment as described above, when the waterproof cap 216 is attached to the connector portion 212, the movable top plate portion 230 is pushed in the direction of the base plate 224 with fingers or the like, and the link member When the hooking portion 237 provided on the distal end side of the 236 is hooked on the locking recesses 234 provided on both shoulder portions of the connector portion 212 and then the finger is removed from the movable top plate portion 230, the first movement is stopped. As in the case of the embodiment, the extension force of the contracted spring 232 acts, and the link member 236 is pulled back in the direction opposite to the direction in which the waterproof cap 216 is attached to the connector portion 212, so that the distal end side of the link member 236 The hooks 237 provided on the hooks are locked to locking recesses 234 formed on both shoulders of the connector part 212.

  Further, a protrusion 240 is provided on the side surface in the longitudinal direction of the movable top plate 230 of the waterproof cap 216 of the present embodiment at a position where it abuts against the link member 236. In the present embodiment, the link members 236 are mutually connected. Since they intersect, the projecting portion 240 is provided at a position inside the mounting hole 238 provided in the movable top plate portion 230. For this reason, as shown in FIG. 6B, when the movable top plate portion 230 is moved in the direction of the base plate 224, the link member 236 is formed on the shoulder portions of the connector portion 212 by the projection portion 240. The link member 236 opens in the direction away from the recess 234, in other words, outside the connector portion 212, and is released from the locked state.

  In the present embodiment, like the waterproof cap 216 of the first embodiment, the hooking portion 237 that is a portion that is locked to the locking recess 234 of the link member 236 that is a locking means is attached to the hooking portion 237. A roller 242 is axially attached as an auxiliary means. By providing the roller 242, when the waterproof cap 216 is attached to the connector portion 212, the hook portion 237 provided on the link member 236 is rotated by rotating the roller 242 on both shoulder portions of the connector portion 212. It becomes easy to lock to the locking recess 234. Further, when the waterproof cap 216 is removed from the connector part 212, the roller 242 is rotated when the link member 236 is opened outward, so that the hooking part 237 can be easily detached from the locking recess 234.

  Next, the principle of operation when the hooking portion 237 provided on the link member 236 is detached from the locking recess 234 will be described with reference to the drawings. FIG. 7 is a diagram for simplifying and explaining the principle of the operation when the endoscope waterproof cap 216 of the present embodiment is removed from the connector portion 212.

  FIG. 7 shows the projection 240 provided on the side surface of the base plate 224 of the cap body 222 in FIGS. 6A and 6B, the attachment hole 238 of the link member 236, and the center of the link member 236 in the axial direction. The above operation will be described with a triangle formed by connecting a line and an intersection 236a with the center line in the longitudinal direction of the base plate 224 passing through the protrusion 240.

  As shown in FIG. 7, when the waterproof cap 216 is attached to the connector portion 212, when the movable top plate portion 230 is pushed in order to remove the waterproof cap 216 from the connector portion 212, the link member 236, the link member The angle of the acute angle part formed by the perpendicular line 241 lowered from the mounting hole 238 of the 236 to the base plate 224 increases from θ2 to η2. As shown in FIG. 6B, when the movable top plate 230 is pushed, the spring 232 provided between the movable top plate 230 and the base plate 224 is expanded from the contracted state. Counteracts to be restored.

  For this reason, the acute angle portion increased to the angle η2 tends to act in a direction to return to the original angle θ2, but passes through the protrusion 240 and the axial center line of the link member 236 and the protrusion 240. Since the distance α2 to the intersection 236a with the longitudinal center line of the base plate 224 remains constant, the protrusion 240 acts as a force point and acts in a direction to open the link member 236 outward. . In other words, when the movable top plate portion 230 is pushed when the waterproof cap 216 is removed from the connector portion 212, the mounting hole 238 provided on the side surface of the movable top plate portion 230 is used as a fulcrum and abuts on the link member 236. The protrusion 240 provided on the side surface of the movable top plate 230 serves as a power point and acts to open the link member 236 outward. For this reason, it becomes easy to remove the hooking portion 237 provided on the distal end side of the link member 236 from the locking recess 234 of the connector portion 212.

  Further, as described above, the pair of link members 236 provided on the waterproof cap 216 of the present embodiment intersect with each other and are formed on both shoulder portions of the connector portion 212 provided at the extension destination of the link member 236. It is detachably locked to the stop recess 234. For this reason, when the waterproof cap 216 is attached to the connector portion 212, the angle θ2 of the acute angle portion formed by the link member 236 and the perpendicular 241 lowered from the mounting hole 238 of the link member 236 to the base plate 224 is In the case of the waterproof cap 116 of one embodiment, the angle θ1 formed by the acute angle portion is larger from the beginning.

  The angle η2 of the acute angle portion when the protrusion 240 acts as a power point and acts in the direction of opening the link member 236 outwardly is substantially the same as in the first embodiment. The waterproof cap 216 of the present embodiment is more movable than the waterproof cap 116 of the embodiment when the movable top plate 230 is pushed in when the link member 236 is opened and the waterproof cap 216 is removed from the connector 212. The moving distance of 230 is small. Therefore, the link member 236 that is a locking means for the connector portion 212 even if the moving amount when the movable top plate portion 230 is pushed to remove the link member 236 from the locking recess 234 of the connector portion 212 is small. Therefore, the elastic force of the spring 232 can be increased. In other words, when the waterproof cap 216 is attached to the connector portion 212, stronger water tightness can be obtained.

  Furthermore, since the spring 232 having a larger elastic force than the waterproof cap 116 of the first embodiment can be used from the beginning, it can be moved unexpectedly by an external impact or the like while the waterproof cap 216 is attached to the connector portion 212. Since there is no possibility that the link member 236 is detached from the locking recess 234 when the top plate portion 230 is pushed, it becomes possible to eliminate the need for locking means for the movable top plate portion 230 when the waterproof cap 216 is attached. For this reason, the manufacturing cost and labor of the waterproof cap 216 can be reduced.

(Third embodiment)
Next, the configuration and operation of the endoscope waterproof cap 316 according to the third embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a diagram illustrating a state where the endoscope waterproof cap 316 of the present embodiment is attached to the connector portion 312, and FIG. 8A is a view illustrating when the waterproof cap 316 is attached to the connector portion 312 of the waterproof cap 316. (B) is a diagram showing a state when the waterproof cap 316 is removed from the connector portion 312. FIG.

  The waterproof cap 316 of the present embodiment includes a cap body 322, similar to the waterproof caps 116 and 216 of the first and second embodiments, and the cap body 322 is made of a hard member such as metal or plastic. A base plate 324 and an elastic seal member 326 made of rubber or the like fixed to the surface of the base plate 324 are configured. In addition, a pair of guide rods 328 are provided vertically with respect to the longitudinal direction of the base plate 324 of the cap body 322, and a movable top plate portion 330 that can be displaced in a direction approaching or separating from the base plate 324 is provided on the guide rod 328. The cap body 322 is provided to face the base plate 324 so as to be inserted. Further, as an urging means for urging the cap body 322 in the direction in which the cap body 322 is attached to the connector portion 312, for example, a spring 332 is wound around the guide rod 328 between the base plate 324 and the movable top plate portion 330. Is provided.

  The waterproof cap 316 of the present embodiment is different from the waterproof cap 116 of the first embodiment in the configuration of locking means for holding the state where the waterproof cap 316 is attached to the connector portion 312. That is, the waterproof cap 316 of this embodiment has a pair of link members 336 pivotally supported on the movable top plate 330 as a locking means for holding the cap body 322 in a state of being attached to the connector portion 312. A knob member 342 provided with an attachment hole 342b is rotatable at a portion of the link member 336 that is engaged with the engagement recess 334, in other words, the hooking portion 337 that is provided on the distal end side of the link member 336. Is provided.

  These link members 336 are formed by bending, for example, a metal rod into a substantially U shape, as in the first embodiment, and bending both ends thereof to move the movable top plate portion. A substantially loop shape is obtained by pivoting in the mounting hole 338 provided in 330, and the link member 336 can be rotated so as to straddle the cap body 322. Further, the knob member 342 has a substantially trapezoidal column shape, and a portion corresponding to an acute vertex is a locking convex portion 342a, and is locked to locking concave portions 334 formed on both shoulder portions of the connector portion 312. .

  With the above-described configuration of the locking means provided in the waterproof cap 316 of the present embodiment, when the waterproof cap 316 is attached to the connector portion 312, as shown in FIG. The movable top plate 330 is moved in the direction of the base plate 324 via the link member 336 while the latching convex portion 342a is slid on both shoulders of the connector portion 312, and the tip of the knob member 342 is moved. When the engaging protrusion 342a having the hook is hooked on the engaging recess 334 provided on both shoulders of the connector portion 312, the contraction force of the contracted spring 332 acts as in the case of the first embodiment, and the waterproof cap When the link member 336 and the knob member 342 provided on the distal end side of the link member 336 are pulled back in a direction opposite to the direction in which the connector 316 is attached to the connector portion 312, Member 336 is locked to the locking recess 334 formed on both shoulder portions of the connector portion 312 through the knob member 342.

  Further, as shown in FIG. 8B, when the knob member 342 is picked with fingers or the like and opened outward with the locking convex portion 342a as a fulcrum, the movable top plate portion 330 is attached to the base plate 324 via the link member 336. The link member 336 opens in the direction in which the link member 336 is disengaged from the locking recesses 334 formed on both shoulders of the connector portion 312, that is, outside the connector portion 312, and is released from the locked state. The

  As described above, in the present embodiment, the hooking portion 337 of the link member 336 serving as the locking means is provided with the knob member 342 as a mounting auxiliary means so that the waterproof cap 316 can be rotated. When the connector portion 312 is attached, the link member 336 is rotated to the both shoulders of the connector portion 312 using the locking projections 342 a of the knob member 342 as a fulcrum so that the link member 336 is locked via the tab member 342. It becomes easy to lock to. Further, when the waterproof cap 316 is removed from the connector portion 312, when the link member 336 is opened to the outside, the link member 336 is rotated by using the locking convex portion 342 a provided on the knob member 342 as a fulcrum. It will come off easily from the latching recessed part 334 via.

  As described above, in the present embodiment, the movable top plate portion 330 is easily moved to the base plate 324 side via the knob member 342 and the link member 336 provided with the knob member 342 so as to be rotatable at the distal end side. , The elastic force of the spring 332 can be increased. In other words, when the waterproof cap 316 is attached to the connector portion 312, stronger watertightness can be obtained. Furthermore, since the spring 332 having a larger elastic force than the waterproof cap 116 of the first embodiment can be used from the beginning, it can be moved unexpectedly by an external impact or the like while the waterproof cap 316 is attached to the connector portion 312. Since there is no possibility that the link member 336 as the locking member is detached from the locking recess 334 when the top plate 330 is pushed, the locking means for the movable top plate 330 is not required when the waterproof cap 316 is attached. Is possible.

(Fourth embodiment)
Next, the configuration and operation of the endoscope waterproof cap 416 according to the fourth embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a partial cross-sectional view showing a state in which the endoscope waterproof cap 416 of the present embodiment is attached to the connector portion 412, and FIG. 9A is attached to the connector portion 412 of the waterproof cap 416. It is a fragmentary sectional view at the time, (b) is a front view of the connector part 412 to which the waterproof cap 416 of this Embodiment is attached. FIG. 10A is a plan view of the opening of the endoscope waterproof cap 416 of the present embodiment, and FIG. 10B shows the endoscope waterproof cap 416 of the present embodiment. It is a top view of the opening part of the connector part 412 with which it mounts | wears. Further, FIG. 11 is a circuit diagram of a light emitting circuit provided in the endoscope waterproof cap 416 and the connector portion 412 of the present embodiment.

  As shown in FIG. 10B, the opening portion 418 of the connector portion 412 is provided with a contact portion 420 serving as an electrical contact group. Similar to the waterproof cap 116 of the first embodiment, the waterproof cap 416 of the present embodiment includes a cap body 422, which includes a base plate 424 made of a hard member such as metal or plastic, And an elastic seal member 426 made of rubber or the like fixed to the surface of the base plate 424. The elastic seal member 426 includes a fitting portion 426a that covers the opening portion 418 of the connector portion 412 and a convex portion 426b that fits the contact portion 420. When the elastic sealing member 426 is brought into contact with the opening portion 418 side of the connector portion 412, The convex portion 426b enters the opening portion 418 of the connector portion 412 to a position where it does not come into contact with the contact portion 420, and the fitting portion 426a abuts on the end surface of the opening portion 418 of the connector portion 412 to The inside can be sealed.

  Similarly to the waterproof cap 116 of the first embodiment, a pair of guide rods 428 are provided vertically with respect to the longitudinal direction of the base plate 424 of the cap main body 422 so as to approach and separate from the base plate 424. A movable top plate 430 that can be displaced is provided to face the base plate 424 of the cap body 422 so as to be inserted into the guide rod 428. Further, as an urging means for urging the cap body 422 in the direction in which the cap body 422 is attached to the opening 418 of the connector portion 412, for example, a spring 432 is wound around the guide rod 428 between the base plate 424 and the movable top plate portion 430. It is provided as you do. Therefore, when the movable top plate 430 is slid in the direction of the base plate 424 with respect to the guide rod 428 when the waterproof cap 416 is attached to the opening 418 of the connector portion 412, the movable top plate 430 and the base The spring 432 provided between the plates 424 contracts, and the force acting in the direction in which the contracted spring 432 is expanded biases the cap body 422 in the direction in which the cap body 422 is attached to the opening 418 of the connector part 412.

  The waterproof cap 416 of the present embodiment is similar to the waterproof cap 316 of the third embodiment in order to make it easy to attach and detach the locking means for preventing the drop off when the waterproof cap 416 is attached to the connector portion 412. A pair of link members 436 are pivotally supported on the movable top plate portion 430 as locking means for holding the cap body 422 in a state where the cap body 422 is attached to the connector portion 412, and locked to the locking recess 434 of the link member 436. A knob member 442 provided with a mounting hole 442b as a mounting / removal assisting means is rotatably provided on the hooking portion 437 provided on the distal end side of the link member 436. Also, the knob member 442 has a substantially trapezoidal columnar shape as in the third embodiment, and the portions corresponding to the acute apexes serve as locking projections 442a and are formed on both shoulders of the connector portion 412. It is locked in the locking recess 434.

  Further, as shown in FIGS. 9A and 9B, the connector portion 412 to which the waterproof cap 416 of this embodiment is attached is provided with a light emitting circuit having a light source 444 such as an LED. Then, on the contact surface of the cap main body 422 with the opening portion 418 of the connector portion 412, as shown in FIGS. 9A and 10A, the light emission for turning on the light source 444 provided in the connector portion 412. Electrical contacts 446 formed of a conductive material such as a metal for turning on or off the light emission of the light emitting circuit are provided at portions facing the connection point 448 with the circuit, in other words, at the inner four corners of the fitting portion 426a. Four are spaced apart. These electrical contacts 446 are connected by a conductive wire 450.

  Next, the structure of the light emitting circuit provided in the connector part 412 and the waterproof cap 416 which mounts the waterproof cap 416 of this Embodiment is demonstrated using drawing. FIG. 11 is a configuration diagram of a light emitting circuit provided in the connector portion 412 and the waterproof cap 416 to which the waterproof cap 416 of the present embodiment is attached.

  As shown in FIG. 9, a light source 444 such as an LED is provided on the side surface of the connector portion 412. As shown in FIG. 11, between the connection points 448d and 448c, which are one of the connection points 448 to the light emitting circuit, provided near the four corners of the opening 418 of the connector part 412, a light source 444 and a small battery or the like A power supply 454 is provided and connected by a conductive wire 452b. Further, among the connection points 448, the other connection points 448a and 448b are connected by another conducting wire 452a.

  On the other hand, light emission of the light source 444 is turned on or off at a portion of the contact surface of the waterproof cap 416 with the connector portion 412 facing the connection point 448 with the light emitting circuit, in other words, at the inner four corners of the fitting portion 426a. A plurality of electrical contacts 446 are provided at a distance from each other. Among these electrical contacts 446, the electrical contacts 446c and 446a are connected by a conductive wire 450a, and the electrical contacts 446b and 446d are connected by a conductive wire 450b.

  With the waterproof cap 416 and the connector portion 412 having such a configuration, in other words, whether the waterproof cap 416 and the connector portion 412 are attached without being displaced when the waterproof cap 416 is attached to the connector portion 412. By detecting the crimping of the waterproof cap 416 and the connector portion 412 and lighting the light source 444 provided in the light emitting circuit, it is possible to easily confirm whether the watertightness between the two is taken. For example, when the waterproof cap 416 is attached to the connector portion 412 in a shifted state, the electrical contacts 446a, 446b, 446c, 446d are provided on the waterproof cap 416 separately from each other. Since it is not connected to the connection points 448a, 448b, 448c, 448d with the light emitting circuit in the opening of each, the electrical contacts 446a, 446b, 446c, 446d, the connection points 448a, 448b, 448c, 448d, the conductors 450a, 450b, 452a, 452b, the light source 444, and the power source 454 are not completely turned on, and the light source 444 is not turned on. Since the light source 444 is not turned on in this way, it can be easily confirmed from the outside that watertightness between the waterproof cap 416 and the connector portion 412 is not taken.

  Further, the configuration of the light emitting circuit provided in the connector portion 412 can be modified as follows. FIG. 12 is a partial cross-sectional view showing a state where an endoscope waterproof cap 416 as a modification of the present embodiment is attached to the connector portion 412, and FIG. 12A is a connector of the waterproof cap 416. It is a fragmentary sectional view at the time of attachment to part 412, and (b) is a front view of connector part 412 where waterproof cap 416 of this embodiment is attached. FIG. 13A is a plan view of the opening of the endoscope waterproof cap 416 of the present embodiment, and FIG. 13B shows the endoscope waterproof cap 416 of the present embodiment. It is a top view of the opening part of the connector part 412 with which it mounts | wears. Furthermore, FIG. 14 is a circuit diagram of a light emitting circuit provided in the endoscope waterproof cap 416 and the connector portion 412 of the present embodiment.

  As shown in FIG. 12A, the connection point of the light emitting circuit provided in the connector portion 412 of the modification of the present embodiment is a conductive rubber 460 between conductive electrode plates 454 and 458 such as metal. Is interposed. Among the connection points, the electrode plate 454 is provided on the opening 418 side of the connector portion 412. In the present embodiment, as shown in FIG. 14, the electrode plate 456 provided on the opening 418 side of the connector portion 412 has a conductor 464a between the electrode plates 456c and 456a, and between the electrode plates 456b and 456d. Are connected by a conductive wire 464b. The other electrode plate 458 is connected to the inside of the connector portion 412 via a conducting wire 462. Specifically, as shown in FIG. 14, between the electrode plates 458c and 458d, a light source 444 and a power source 454 such as a small battery are provided and connected by a conducting wire 462a. Further, the other electrode plates 458a and 458b are connected by another conductive wire 462b.

  On the other hand, light emission of the light source 444 is turned on or off at a portion of the contact surface of the waterproof cap 416 with the connector portion 412 facing the connection point 456 with the light emitting circuit, in other words, at the inner four corners of the fitting portion 426a. A plurality of pressing portions 457 are provided to be separated from each other by a total of four. These pressing portions 457 of this embodiment are not connected to each other by conducting wires, and push the electrode plate 456 provided in the opening 418 of the connector portion 412 when the waterproof cap 416 is attached to the connector portion 412. It is a convex part.

  When the conductive rubber 460 is provided between the electrode plates 456 and 458 serving as connection points of the light emitting circuits provided in the connector portion 412, the electrode plate 456 provided in the opening 418 of the connector portion 412 is pushed. , 458 is contracted and the conductive plates 456 and 458 are brought into conduction.

  By configuring the waterproof cap 416 and the connector portion 412 as described above, whether the waterproof cap 416 and the connector portion 412 are attached without being displaced when the waterproof cap 416 is attached to the connector portion 412. Then, it is possible to easily confirm whether watertightness between the waterproof cap 416 and the connector portion 412 is sensed by lighting the light source 444 provided in the light emitting circuit. For example, when the waterproof cap 416 is attached to the connector portion 412 in a shifted state, the pressing portions 457a, 457b, 457c, and 457d are provided on the waterproof cap 416 separately from each other. Since the portions 457a, 457b, 457c, and 457d do not push and contact the electrode plates 456a, 456b, 456c, and 456d that are connection points with the light emitting circuit provided in the opening of the connector portion 412, each of the light emitting circuit connection points Electrodes 456a, 456b, 456c, 456d, 458a, 458b, 458c, 458d, conductive rubber 460a, 460b, 460c, 460d, conductors 462a, 462b, 464a, 464b, light source 444, and power source 454 are not completely conducted. , The light source 444 is not turned on. Since the light source 444 is not turned on in this way, it can be easily confirmed from the outside that watertightness between the waterproof cap 416 and the connector portion 412 is not taken.

  Further, in this embodiment, the electrode plates 456 and 458 and the conductive rubber 460 that serve as connection points of the light emitting circuit are provided in the connector portion 412. However, the conductive rubber 460 is provided on the waterproof cap 416 side. Is also possible. For example, it is assumed that the electrical contact 446 of the waterproof cap 416 of the fourth embodiment is provided with conductive rubber 460 below the conductive electrode plate, and the connection point 448 with the light emitting circuit on the connector part 412 side is conductive. Even when the connection structure of the light emitting circuit provided in the waterproof cap 416 and the connector portion 412 is the same as that shown in FIG.

  Further, in the present embodiment, the waterproof cap 316 and the connector portion 312 of the third embodiment are provided with a light emitting circuit, but the waterproof caps 116 and 216 and the connector of the first and second embodiments are provided. Even if these light emitting circuits are provided in the sections 112 and 212, the same effect can be obtained.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, although two guide rods and urging means provided in the waterproof cap of each embodiment are provided, the number of these guide rods and urging means is not limited to this number. The biasing means is a spring, but other elastic members such as rubber can be substituted.

  The number of electrical contacts provided in the waterproof cap according to the fourth embodiment is four, but the number is not limited to this number as long as these electrical contacts are provided apart from each other.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a waterproof cap for an endoscope that is attached to an opening of a connector portion of an endoscope, and particularly processes video signals as in an electronic endoscope or an ultrasonic endoscope. When immersing in a cleaning solution or disinfecting solution in a body cavity inspection device that needs to send and receive electrical signals to / from a processor or a signal processing device such as an ultrasonic observation device that processes ultrasonic signals, The present invention can be applied to a waterproof cap for an electrical connector of an in-vivo inspection device used for waterproof protection of an electrical contact or the like provided on a connector portion that is detachably connected to a signal processing device.

FIG. 1 is a diagram showing an outline of the entire configuration of the electronic endoscope apparatus. FIG. 2 is a partial cross-sectional view showing a state in which the endoscope waterproof cap according to the first embodiment is attached to the connector part. FIG. It is a fragmentary sectional view, (b) is a fragmentary sectional view which shows a state when removing a waterproof cap from a connector part. (A) is a top view of the opening part of the waterproof cap for endoscopes of the embodiment, (b) is the opening part of the connector part to which the waterproof cap for endoscopes of the embodiment is attached FIG. FIG. 4 is a diagram for simplifying and explaining the principle of operation when the waterproof cap for endoscope of the embodiment is removed from the connector portion. FIG. 5 is a partial cross-sectional view showing a state in which the endoscope waterproof cap according to the modification of the first embodiment is attached to the connector portion. FIG. It is a fragmentary sectional view at the time of wearing, and (b) is a fragmentary sectional view showing a state when removing a waterproof cap from a connector part. FIG. 6 is a diagram showing a state when the endoscope waterproof cap according to the second embodiment is attached to the connector portion. FIG. 6A shows a state when the waterproof cap is attached to the connector portion. (B) is a figure which shows a state when removing a waterproof cap from a connector part. FIG. 7 is a diagram for simplifying and explaining the principle of operation when the waterproof cap for endoscope of the embodiment is removed from the connector portion. FIG. 8 is a diagram showing a state when the endoscope waterproof cap according to the third embodiment is attached to the connector portion, and (a) is a state when being attached to the connector portion of the waterproof cap. (B) is a figure which shows a state when removing a waterproof cap from a connector part. FIG. 9 is a partial cross-sectional view showing a state in which the endoscope waterproof cap according to the fourth embodiment is attached to the connector portion. FIG. 9A is a view when the waterproof cap is attached to the connector portion. It is a fragmentary sectional view, (b) is a front view of the connector part with which the waterproof cap of the embodiment is mounted. (A) is a top view of the opening part of the waterproof cap for endoscopes of the embodiment, (b) is the opening part of the connector part to which the waterproof cap for endoscopes of the embodiment is attached FIG. FIG. 11 is a circuit diagram of a light emitting circuit provided in the waterproof cap for endoscope and the connector portion of the embodiment. FIG. 12 is a partial cross-sectional view showing a state where an endoscope waterproof cap, which is a modification of the fourth embodiment, is attached to a connector portion. FIG. 12A is a connector portion of the waterproof cap. It is a fragmentary sectional view at the time of mounting | wearing, (b) is a front view of the connector part in which the waterproof cap of the embodiment is mounted | worn. (A) is a top view of the opening part of the waterproof cap for endoscopes of the embodiment, (b) is the opening part of the connector part to which the waterproof cap for endoscopes of the embodiment is attached FIG. FIG. 14 is a circuit diagram of a light emitting circuit provided in the waterproof cap for endoscope and the connector portion of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Endoscope 102 Main body operation part 104 Insertion part 106 Universal cord 108 Light source and processor unit 110 Light source connector 112,212,312,412 Connector part (electric connector)
114a, 114b Socket part 116, 216, 316, 416 Waterproof cap 118, 218, 318, 418 Opening part 120 Contact part 122, 222, 322, 422 Cap body 124, 224, 324, 424 Base plate 126, 426 Fit part 128, 228, 328, 428 Guide rods 130, 230, 330, 430 Movable top plate 132, 232, 332, 432 Spring 134, 234, 334, 434 Locking recess 136, 236, 336, 436 Link member 137, 237 , 337, 437 Hooking part 138, 238, 338, 438 Mounting hole 140 Projection part 142 Roller 144 L-shaped spring 146 Slide part

Claims (7)

A waterproof cap for an endoscope that is attached to an opening of a connector portion provided at an end of a connection cord of an endoscope,
A cap body attached to the opening of the connector portion;
An urging means for elastically urging the cap body in a direction of mounting to the opening of the connector portion;
A movable top plate provided opposite to the cap body via the biasing means;
A locking means provided on the movable top plate portion and detachably locking the cap body to the connector portion against a direction of mounting to the opening of the connector portion of the biasing means;
A waterproof cap for endoscopes, characterized by providing The connector portion is provided with a locking recess for locking the locking means,
The locking means is a link member pivotally supported by a mounting hole provided in a side surface of the movable top plate portion, and the link member includes a hooking portion locked in the locking recess. The waterproof cap for an endoscope according to claim 1, characterized in that it is characterized in that: Protrusions are provided on the side of the cap body,
The waterproof cap for an endoscope according to claim 2, wherein when the cap main body is attached to the connector portion, the protrusion is in contact with the link member.   The endoscope according to any one of claims 1 to 3, wherein the movable top plate portion is provided with a locking means for locking the movable top plate portion with respect to the cap body. Waterproof cap for.   In the locking means, a pair of the link members are provided on the movable top plate portion, and the pair of link members are detachably locked to the locking recesses which are crossed with each other and are extended to the link member. The waterproof cap for endoscopes according to any one of claims 2 to 4, wherein the waterproof cap is used.   The waterproof cap for an endoscope according to any one of claims 2 to 5, wherein attachment / detachment assisting means is provided at a hooking portion of the link member. The connector portion is provided with a light emitting circuit having a light source,
A plurality of electrical contacts for turning on or off the light emission of the light source are provided on the contact surface of the cap body with the connector portion at a portion facing the connection point with the light emitting circuit. The waterproof cap for an endoscope according to any one of claims 1 to 6, wherein the waterproof cap is used.

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